A lot depends on your intended use (drinking vs other uses).
Get the well in, have it developed (just pumped for a while nowadays) to get coarser sediment against the screen to help filter the fines.
Make sure the well is 'sanitized' with Cl bleach. PM if your well driller is not knowledgeable. #1 item afterward is to test for 'total coliform' bacteria. Other tests can be done separately.
Depending on flow and intended use, other advice can be proffered.
